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为了解9个 STR 位点在汉族的频率分布资料,评价其在法医学中的应用价值,采用PCR 复合扩增荧光染色标记技术,对300名无关个体血样的9个位点的基因频率分布进行调查。结果显示,其杂合度为0.7511～0.8551,鉴别机率为0.8688～0.9641,9个位点的复合检验鉴别机率可这0.99999999983,总非父排除率为0.9998,在法医学个体识别和亲子鉴定上,已达到足以完全认定的标准,并对混合样品进行了分析。
To understand the frequency distribution of 9 STR loci in Han nationality and evaluate its value in forensic science, we investigated the frequency distribution of 9 loci in 300 blood samples from unrelated individuals by PCR amplification of fluorescent staining . The results showed that the heterozygosity was 0.7511 ~ 0.8551, the discriminant probability was 0.8688 ~ 0.9641, the probability of the combined test of 9 loci was 0.99999999983, the total non-parent exclusion rate was 0.9998, which was reached in individual identification and paternity testing of forensic medicine Sufficient to fully identify the standard, and the mixed samples were analyzed.